plausability

i was walking home from the pool tonight, passing a house on the corner that i always notice for two reasons: one is it's strange mitred facade which is odd in a victorian terrace row. the other reason is that i have never seen the curtains opened. not once. not in years. sure enough, tonight was no exception, all curtains firmly shut. obviously vampires, right? i then half remembered a conversation with n about the same house, where n gave a plausible alternative motive. i couldn't remember what it was, and, trying to remember, thought, "harumph. what could possibly be more plausible than vampires?" i then remembered n's theory that the house was probably vacant. i guess he's probably right. that is more plausible than vampires.